Knob attachment



(Model.)

W. H. GOMSTOCK.

KNOB ATTAGHMBNT.

No. 328,191. Patented Oct. 13, 1885.

UNITED STATES PATENT OFFICE.

WILLIAM H. COMS'IOCK, OF NORWICH, CONNECTICUT.

KNOB ATTACHMENT.

SPECIFICATION farming part of Letters Patent No. 328,191, dated October 13, 1885.

.Application tiled December 30, 1884. Serial No. 151,609. (Model.)

.To all whom it may concern.-

Beit known that I, WILLIAM H. CoMs'TocK, of the city of Norwich, county of New London, and State of Connecticut, have invented a certain new and useful Improvement in Knob Attachments, which improvement is fully set forth and described in the following specication, reference being had to the drawings hereunto annexed, in which- Figure lis a side view of my new device as it appears when properly secured to a knoblatch, a portion of the lock-case and the hub being shown in section. In Fig. 2 I have shown a sectional view of the connecting-disks c c' and the right-hand knob-neck a', said knob-neck being shown properly locked in the diskl c. On the left'or opposite side is shown the knob-neck a detached. Fig. 3 shows outer end views of the disks c c', and Fig. 4 the inner end of one of said disks.

My invention relates to a new means for attaching knob-necks to mortise locks or latches, my purpose being to dispense with the long square connecting-spindle so long in use, yet to provide a device which may be used without materially changing the lock or its spindle-hub. To accomplish this purpose I have provided a pair of disks which may be secured to said hub by a single screw after the lock is in place in the door, and'have so shaped the free ends ot' the knob-necks that they may interlock with said disks, as hereinafter described in detail.

llhe letter A represents a portion of a lockcase, and C the spindle-hub, having the usual square central opening.

c c represent disks having on one end square projections e, centrally located and of such size that they may enter and fill the hole in the hub C,one on each end of said hub, as shown in Figs. l and 2. rIhe outer ends of disks c c are recessed and have at the lower side a lug, h, which extends well upward nearly to the central screw-hole. A transverse cut, i, is made on the periphery of each disk an eighth of an inch or thereabout from the face, cutting through into the recessed outer end of said disk and forming a slot to which, when the several parts are assembled, slips over the lug 7L, so that when the knobneck is rotated the disk and hub are also rotated.

The two disks c c' are alike in every particular, except that one is tapped to receive the threaded portion ofthe connecting-screw 0.

My device is assembled as follows: After the lock is in place in the mortise the squared end of disks c c is entered in hub C, as shown, and the screw o is passed through c', entered in c, and screwed home, the disks being then practically rigid parts of said hub. One of the knob-necks is now passed through its rosette, and with the knob end elevated slightly the lip i is entered in the disk-recess and' slipped upward into its slot z', the recess k at the same time straddling the lug h, as described above.

The knob-necks are now in longitudinal alignment with the hub C, and are locked in said position by screwing or otherwise fastening the rosettes to the door.

Having thus described my invention, I Claiml. The combination, in a mortise lock or latch having a hub with an angular opening, of disks c c', having projecting ends adapted 4to enter and fill the hub-opening, and slots to -ing-slot i, means for securing disks c c to the hub, knob-necks having locking-lips i,adapt ed to engage diskslots i', and recess k, adapted to engage disk-lug It, and a. rose which when secured tixedly to the door will hold the knob-necksinlongitudinal alignment with the lock-hub, all substantially as and for the purpose specified.

WILLIAM H. COMSTOCK.

Witnesses:

FRANK H. ALLEN. TYLER J. HOWARD. 

